Function make_bad_fd

Lib/test/support/os_helper.py:159–169

Create an invalid file descriptor by opening and closing a file and return its fd.

()

def make_bad_fd():
    """
    Create an invalid file descriptor by opening and closing a file and return
    its fd.
    """
    file = open(TESTFN, "wb")
    try:
        return file.fileno()
    finally:
        file.close()
        unlink(TESTFN)


_can_symlink = None